Probably the easiest way would be to write a program that reads the process' memory, finds the ROM (look for its header), and reads it out. Then you'd have the patched ROM and could make a patch. First, though, see if source is available or if the author will simply give the patch to you.

You could look into the emulator executable with a resource editor, such as Reshacker. I think it is the easiest way. That, of course, assuming they added the ips into the executable as a resource. barring that, you may want to do what HyperHacker said. CurrProcess (hxxp://www.nirsoft.net/utils/cprocess.html) allows you to dump the whole process memory into a file, for example.
Hope it helps.

Is vba an open source (or source availble) emulator? If it is, looking into the source code could shed some light on the modifications present in the vba4hanmaru version. You may also want to find a PC dissasembler and compare the results (using a tool such as diff), however, in that case, you'd only get useful information if the unmodified version you where comparing against was compiled with the same compiler as the modified one.

If you've located what appears to the patch, you can extract it using a tool that reads and writes binary data from within files. (On un*x, I'd suggest dd, but I don't know what to recommend on other platforms.) You could also extract it with a fairly easy to write program if you know how to code. In Python you could use something like this:


What format does the patch appear to be in? Does it have a recognizable header? If it starts with "IPS", then it may have the "EOF" marker at the end which would tell you how much data to extract. (Although, the IPS standard isn't very standard, so it may not.)

I'm sure it can be done, so keep at it.

Hey spikeman, you really know your sh*t. I'd have never thought of that.

Why do people do stuff like this? I really don't get it. I'm remind of some poor fool a while back that wanted to create a Zelda hack involving a custome emu packaged in a standalone exe. It's sad really. Some people are so into these games, ad yet, they have no grasp of the spirit of the community. I'm not sure wether I should cry, be sick to my stomach, or be royally p*ssed.

Some people need to get a clue.

Haha the vba4hanmaru doesnt have the memory viewer. The ppl who modded it took that option out so I'm trying to use a hex editor. But i have no idea how it works so I'm kind of asking around to try to find out how to work it out.